From 2fceee5a2fd875007058584ba10fc9a157f99d5d Mon Sep 17 00:00:00 2001
From: lwvmobile <lwvmobile@gmail.com>
Date: Sun, 4 Dec 2022 19:15:33 -0500
Subject: [PATCH] Reverse Mute

---
 include/dsd.h     |  3 +++
 src/dsd_main.c    | 13 +++++++++++--
 src/dsd_mbe.c     | 38 +++++++++++++++++++++++++++++++++++++-
 src/dsd_ncurses.c |  4 ++++
 4 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/include/dsd.h b/include/dsd.h
index 92f373a..a59f796 100644
--- a/include/dsd.h
+++ b/include/dsd.h
@@ -326,6 +326,9 @@ typedef struct
   char chan_in_file[1024]; 
   //end import filenames
 
+  //reverse mute
+  uint8_t reverse_mute;
+
 } dsd_opts;
 
 typedef struct
diff --git a/src/dsd_main.c b/src/dsd_main.c
index 54c6202..0ff845e 100644
--- a/src/dsd_main.c
+++ b/src/dsd_main.c
@@ -446,6 +446,9 @@ initOpts (dsd_opts * opts)
   opts->p25_is_tuned = 0; //set to 1 if currently on VC, set back to 0 on carrier drop
   opts->trunk_hangtime = 1; //1 second hangtime by default before tuning back to CC
 
+  //reverse mute 
+  opts->reverse_mute = 0;
+
 } //initopts
 
 void
@@ -883,9 +886,10 @@ usage ()
   printf ("                 (See channel_map.csv for example)\n");
   printf ("  -2 <file>     Import Group List Allow/Block and Label from csv file (numeral 'two')\n");
   printf ("                 (See group.csv for example)\n");
-  printf ("  -3            Enable Extremely Experimental Trunking Features (NXDN/P25/EDACS/DMR TIII, Con+, Cap+ RC following) with RIGCTL/TCP or RTL Input\n");
+  printf ("  -3            Enable Extremely Experimental Trunking Features (NXDN/P25/EDACS/DMR) with RIGCTL/TCP or RTL Input\n");
   printf ("  -5 <udp p>    Enable RIGCTL/TCP; Set UDP Port for RIGCTL. (4532 on SDR++)\n");
   printf ("  -6 <secs>     Set Trunking VC/sync loss hangtime in seconds. (default = 1 second)\n");
+  printf ("  -8            Reverse Mute - Mute Unencrypted Voice Channels\n");
   //printf ("                 (Currently only available on UDP port 4532)\n");
   printf ("\n");
   exit (0);
@@ -1094,7 +1098,7 @@ main (int argc, char **argv)
   exitflag = 0;
   signal (SIGINT, sigfun);
 
-  while ((c = getopt (argc, argv, "haep:P:qs:tv:z:i:o:d:c:g:nw:B:C:R:f:m:u:x:A:S:M:G:D:L:V:U:Y:K:H:X:NQWrlZTF1:2:345:6:7:")) != -1)
+  while ((c = getopt (argc, argv, "haep:P:qs:tv:z:i:o:d:c:g:nw:B:C:R:f:m:u:x:A:S:M:G:D:L:V:U:Y:K:H:X:NQWrlZTF1:2:345:6:7:8")) != -1)
     {
       opterr = 0;
       switch (c)
@@ -1140,6 +1144,11 @@ main (int argc, char **argv)
         case '6': //hangtime in seconds, default is 1;
           sscanf (optarg, "%d", &opts.trunk_hangtime);
           break;
+        //placeholder until letters get re-arranged
+        case '8':
+          opts.reverse_mute = 1;
+          fprintf (stderr, "Reverse Mute\n");
+          break;
         case 'e':
           opts.errorbars = 1;
           opts.datascope = 0;
diff --git a/src/dsd_mbe.c b/src/dsd_mbe.c
index 425948e..e558c81 100644
--- a/src/dsd_mbe.c
+++ b/src/dsd_mbe.c
@@ -456,7 +456,7 @@ processMbeFrame (dsd_opts * opts, dsd_state * state, char imbe_fr[8][23], char a
   int enc_bit = 0;
   //end enc check
 
-  if ( (opts->dmr_mono == 1 ||opts->dmr_stereo == 1) && state->currentslot == 0) //all mono traffic routed through 'left'
+  if ( (opts->dmr_mono == 1 || opts->dmr_stereo == 1) && state->currentslot == 0) //all mono traffic routed through 'left'
   {
     enc_bit = (state->dmr_so >> 6) & 0x1;
     if (enc_bit == 1)
@@ -480,6 +480,24 @@ processMbeFrame (dsd_opts * opts, dsd_state * state, char imbe_fr[8][23], char a
 			}
 		}
 
+    //reverse mute testing, only mute unencrypted traffic (slave piggyback dsd+ method)
+    if (opts->reverse_mute == 1)
+    {
+      if (state->dmr_encL == 0)
+      {
+        state->dmr_encL = 1;
+        opts->unmute_encrypted_p25 = 0;
+        opts->dmr_mute_encL = 1;
+      } 
+      else
+      {
+        state->dmr_encL = 0;
+        opts->unmute_encrypted_p25 = 1;
+        opts->dmr_mute_encL = 0;
+      } 
+    }
+    //end reverse mute test
+
     if (state->dmr_encL == 0 || opts->dmr_mute_encL == 0)
     {
       state->debug_audio_errors += state->errs2;
@@ -518,6 +536,24 @@ processMbeFrame (dsd_opts * opts, dsd_state * state, char imbe_fr[8][23], char a
 			}
 		}
 
+    //reverse mute testing, only mute unencrypted traffic (slave piggyback dsd+ method)
+    if (opts->reverse_mute == 1)
+    {
+      if (state->dmr_encR == 0)
+      {
+        state->dmr_encR = 1;
+        opts->unmute_encrypted_p25 = 0;
+        opts->dmr_mute_encR = 1;
+      } 
+      else
+      {
+        state->dmr_encR = 0;
+        opts->unmute_encrypted_p25 = 1;
+        opts->dmr_mute_encR = 0;
+      } 
+    }
+    //end reverse mute test
+
     if (state->dmr_encR == 0 || opts->dmr_mute_encR == 0)
     {
       state->debug_audio_errorsR += state->errs2R;
diff --git a/src/dsd_ncurses.c b/src/dsd_ncurses.c
index 78b5975..60def93 100644
--- a/src/dsd_ncurses.c
+++ b/src/dsd_ncurses.c
@@ -2067,6 +2067,10 @@ ncursesPrinter (dsd_opts * opts, dsd_state * state)
   {
     printw ("| Trunk Tracking Active (P25/EDACS/NXDN/DMR)\n");
   }
+  if (opts->reverse_mute == 1)
+  {
+    printw ("| Reverse Mute - Muting Unencrypted Voice\n");
+  }
 
 
   printw ("------------------------------------------------------------------------------\n");